KR20130003443A

KR20130003443A - Press mold for an acute angle bending

Info

Publication number: KR20130003443A
Application number: KR1020110064811A
Authority: KR
Inventors: 최재호; 임영주
Original assignee: 주식회사다스
Priority date: 2011-06-30
Filing date: 2011-06-30
Publication date: 2013-01-09

Abstract

The present invention relates to a metal mold for acute bending, the bending die portion provided on the fixed plate, the plate member is raised; A moving plate installed to be movable upward and downward from an upper side of the bending die portion; A holder part fixed to the moving plate and configured to pressurize and fix the plate member according to the movement of the moving plate; A pair of bending punch parts installed horizontally movable at both sides of the holder part; An acute angle bending portion formed at a lower end of the bending punch portion and having a forming groove portion having an acute angle, and a forming protrusion corresponding to the forming groove portion and protruding diagonally from both ends of the upper end of the bending die portion; It is characterized by.
Accordingly, forming grooves and forming protrusions are formed diagonally to the banding die and the bending punch on which the plate members are raised, and the bending punches are moved horizontally while descending, so that the abutting bands of the plate members are hit by the forming protrusions formed at both ends of the bending dies. By doing so, it is not necessary to go through two bending processes as in the prior art can reduce the bending process, thereby reducing the work time to perform acute angle bending.

Description

PRESS MOLD FOR AN ACUTE ANGLE BENDING

The present invention relates to a press mold for acute bending, and more particularly, by bending the end of the plate member at an acute angle in one operation, an acute bending press press for reducing the time required for acute bending. It is about.

In general, the press mold can be defined as a mold made of a metallic material as a main material in order to produce a large amount of products of the same standard using the plasticity and malleability of the material using a machine tool called a press. It is widely used in the production of products in other fields such as industrial machinery, electrical equipment, office equipment, toys, building materials, etc. It is a machine that processes plastic bending, shearing, and section shrinkage by applying force to materials.

Press mold is mainly used for metal processing to produce various shapes by plastic deformation by applying compressive force to metal plate. It is widely used in various parts from precision parts of watch and camera to automobile body of steel. It is also used for copper plate, brass plate, aluminum plate, plastic and fiber, and it can be processed without any special heating to precise dimension and shape in a short time, and it is used as a mold suitable for mass production.

The bending molding die of the press die is a plate-shaped steel sheet is placed on the die surface having a profile corresponding to the outward direction of the finished product in order to form a product of the desired shape, and pressurized at a constant pressure by a predetermined punch from the top To bend the material into the desired shape.

This conventional bending molding press die is shown in FIG. 1.

As shown in the drawing, the conventional bending molding die includes a stationary mold 10 having a die 11 on which a steel plate material (hereinafter referred to as a 'plate member') is mounted, and a movable die formed above the die 11. It is provided with a large and consists of a movable mold 20 is provided with a punch 21 for pressing the plate member (M) to bend in a desired shape.

The punch 21 is installed to be movable up and down on both sides of the holder portion 22 provided in the movable mold 20, and moves together with the punch 21 when the movable mold 20 is moved downward. It is configured to press and fix the plate material (M) mounted on the (21).

Conventional bending molding die as described above is configured such that the punch 21 is vertically lowered by the movable mold 20 to perform the L-shaped bending process.

Therefore, in order to bend a shape having an acute angle of 90 degrees or less, when the movable mold 20 is lowered, after the L-shaped bending of 90 degrees is made by the punches 21 provided on both sides of the holder portion 22, Acute angle bending is performed by the side punch 23 of the metal mold for acute angle bending formed separately for acute angle bending.

That is, after both ends of the plate member M are moved to a separate acute angle bending molding die after L-shaped bending molding, both ends of the L-shaped banded plate member M are acutely bent.

Conventional bending molding die as described above is provided separately after the L-shaped primary bending operation by a vertically moved punch to bend the shape of the acute angle of 90 degrees or less at both ends of the plate member (M), Since the second bending operation is performed at an acute angle by the metal mold for sharp angle bending, the sharp angle bending work is very troublesome and takes a lot of time.

In addition, when the bending operation is performed over a second time with the ultra high tensile steel, there is a problem in that the quality of the product is not uniform due to the hardening of the bending part.

Therefore, the present invention has been made in order to solve the above problems, by forming an acute bend in the banding die portion on which the plate member is raised, and the bending punch portion provided on both sides of the holder portion for pressing and fixing the plate member When the mold is operated, the holder part is lowered while fixing the plate member, and at the same time, the bending punch part provided on both sides of the holder part hits the bending die part, thereby reducing the bending process for the acute bend. An object of the present invention is to provide a metal mold for banding which can reduce the cost of manufacturing a metal mold for an acute angle banding.

The present invention for achieving the above object is provided with a fixing plate, the bending die portion is raised plate member; A moving plate installed to be movable upward and downward from an upper side of the bending die portion; A holder part fixed to the moving plate and configured to pressurize and fix the plate member according to the movement of the moving plate; A pair of bending punch parts installed horizontally movable at both sides of the holder part; An acute angle bending portion formed at a lower end of the bending punch portion and having a forming groove portion having an acute angle, and a forming protrusion corresponding to the forming groove portion and protruding diagonally from both ends of the upper end of the bending die portion; It is characterized by.

In addition, the bending die portion, the fixing protrusions are formed protruding on the upper portion of the fixing plate, both sides are formed with a predetermined slope; A pair of guide members fixed to both sides of the fixing protrusions; A cam block fixed to an upper portion of the fixing protrusion and having both sides formed at a predetermined inclination; A die fixing member installed in close contact with both sides of the cam block and installed to reciprocate up and down; It is preferably configured to include a bending die fixed to the upper portion of the die fixing member.

In addition, the bending punch unit, a pair of punch holder is installed so as to move in a direction facing each other on both sides of the holder; Each of the pair of punch holders is fixed to one side of the lower end, it is preferable to include a bending punch is fixed to face each other.

In addition, the moving plate is preferably provided with a guide rail for guiding the horizontal movement of the bending punch portion.

In addition, the fixing plate is preferably provided with a punch guide portion for guiding the bending punch portion so that when the moving plate is lowered during operation of the mold, the pair of bending punch portion can be moved in a direction facing each other.

In addition, the one side surface in close contact with each other in the bending punching portion and the punch guide portion is preferably formed of the same inclined surface.

According to the present invention, a bending groove and a forming protrusion are formed diagonally to the bending die and the bending punch on which the plate member is raised, and the bending member is moved horizontally while the bending punch is lowered, while hitting the forming protrusions formed at both ends of the bending die. Since the acute angle of the bending is made, it is not necessary to go through two bending processes as in the prior art can reduce the bending process, thereby reducing the work time to perform the acute angle bending.

In addition, as the bending process is reduced, a mold for a separate bending process is not required, thereby reducing the cost for manufacturing the mold.

1 is a view showing a mold for vertical banding in a conventional molding die for bending.
2 is a view showing a mold provided with a side punch for acute angle bending in a conventional molding die for bending.
Figure 3 is a perspective view showing a mold for bending molding according to an embodiment of the present invention.
Figure 4 is a cross-sectional view showing a mold for bending molding according to an embodiment of the present invention.
5 to 7 is a view showing the operating state of the mold for bending molding according to an embodiment of the present invention.

Specific embodiments of the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

Figure 3 is a perspective view showing a mold for bending molding according to an embodiment of the present invention, Figure 4 is a cross-sectional view showing a mold for bending molding according to an embodiment of the present invention, Figures 5 to 7 are one of the present invention 2 is a view showing an operating state of the bending punch of the bending molding die according to the embodiment.

As shown, the bending molding die 100 according to an embodiment of the present invention is a fixing plate 200, the bending die portion 300, the moving plate 400, the holder portion 500, the bending punch portion ( 600), the acute angle bending portion 700 is large.

The bending molding die 100 is a banding for fixing the plate member (M) by moving in a direction in which the pair of bending punches 620 of the bending punch unit 600 when the moving plate 400 is lowered While hitting the edge portion of the die portion 300 is a structure for bending both ends of the plate member (M) at an acute angle.

The fixing plate 200 is for supporting the die 100 for bending molding by placing it on the bottom, and is provided with a bending die portion 300 on which the plate member M is mounted and fixed.

The bending die part 300 includes a fixing protrusion 310 protruding from the upper portion of the fixing plate 200, a pair of guide members 320 fixed to both sides of the fixing protrusion 310, and a fixing protrusion 310. At the upper end of the cam block 330 is fixed to the center of the center, the die fixing member 340 and the die fixing member 340 to reciprocate between the both sides of the cam block 330 and the guide member 320, respectively It is fixed and comprises a bending die 350, the plate member (M) is raised.

Fixing protrusion 310 is formed integrally protruding on the top of the fixing plate 200, both sides are formed at a predetermined inclination.

The guide member 320 is configured as a pair to be fixed to both sides of the fixing protrusion 310, respectively, and is fixed in close contact with both sides of the fixing protrusion 310 from the lower end of the one side, the center portion, the fixing protrusion 310 It is configured to protrude higher than).

The cam block 330 is installed at the center of the fixing protrusion 310, and is configured to protrude higher than the guide member 320 which is tightly fixed to both sides of the fixing protrusion 310.

The cam block 330 is fixed to the fixing groove 311 is formed on the upper surface of the fixing protrusion 310, both sides are formed at the same slope as both sides of the fixing protrusion 310. That is, both sides of the fixing protrusion 310, the guide member 320, both sides of the cam block 330 is configured with the same inclination.

A certain space is formed between the guide member 320 and the cam block 330, and a die fixing member 340 is installed in the space, between the side of the cam block 330 and the inner surface of the guide member 320. It is configured to reciprocate up and down.

The die fixing member 340 is configured in pairs to be fixed to both sides of the cam block 330, respectively, and the gap is narrowed when raised, and configured to be spaced apart when descended.

And, the upper end of the pair of die fixing member 340 is fixed to the banding die 350, the plate member (M) which is band-molded by press working is fixed, respectively, the die fixing member during the operation of the bending molding die 100 The pair of bending dies 350 are configured to be widened or narrowed with each other while being reciprocated with the die fixing member 340 according to the vertical movement of the 340.

The upper portion of the bending die 350 is fixed to the bottom surface of the moving plate 400 which is provided so that the holder portion 500 for pressing and fixing both ends of the plate member M is moved up and down.

The holder part 500 is configured to move up and down with the moving plate 400, and presses the upper part of the plate member M placed on the upper part of the bending die 350 when the moving plate 400 descends. When bending the molding, the plate member (M) serves to fix to prevent the flow or deformation.

Bending punches 600 are provided on both sides of the holder part 500 to bend at both ends of the plate member M fixed between the holder part 500 and the bending die 350 at an acute angle.

The bending punch part 600 is a punch holder 610 which is installed to be movable horizontally to the moving plate 400 is installed holder holder 500, and the bending punch is fixed to one side of the lower end of the punch holder 610 And 620.

Punch holder 610 is installed on both sides of the holder portion 500 so as to be movable, it is configured to approach or away from each other in a direction facing each other. And, the punch holder 610 is configured to move in a direction approaching each other when the moving plate 400 is lowered.

In addition, the bending punches 620 are fixed to lower ends of the pair of punch holders 610, respectively. When the bending punch 620 is fixed to the lower end of the punch holder 610, the bending punch 620 is fixed to one edge of the lower end of the bending punch 620 facing each other.

The bending punch 620 is fixed to the punch holder 610 in a shape of a rhombus with four corner portions facing up, down, left and right.

Meanwhile, the bending die portion 300 and the bending punch portion 600 are provided with an acute angle bending portion 700 for bending at both ends of the plate member M placed on the bending die 350 at an acute angle.

The acute angle bending portion 700 is formed in a triangular groove on one side of the bending punch 620 of the bending punch portion 600, the forming groove portion 710 and the forming groove portion 710 is formed at an acute angle, the forming groove portion 710 Corresponding to the configuration and includes a forming protrusion 720 protruding in an oblique direction from both sides of the bending die 350 of the bending die portion 300.

Here, the forming groove 710 is formed on one side of the bending punch 620, is formed in one corner of the bending punch 620 having a rhombus shape, the bending punch 620 is a punch holder 610 Molding groove 710 is configured to face each other when fixed to.

On the other hand, the fixing plate 200, when the moving plate 400 is lowered during the operation of the mold, the bending punching portion 600 so that the pair of bending punching portion 600 can be moved in a direction facing each other while descending Punch guide portion 800 is provided to guide the.

The punch guide part 800 is provided on both sides of the bending die part 300, and is configured to be spaced apart from the guide member 320 of the bending guide part 300 by a predetermined distance.

In addition, one side surface of the punch holder 610 of the bending punch part 600 and one side surface of the punch guide part 800 are formed with the same inclined surface, and the punch holder 610 has one side surface of the punch guide part 800. It is configured to move toward the holder portion 500 while descending in close contact with one side of the).

In addition, the moving plate 400 is provided with a guide rail 630 for horizontally moving the bending punch unit 600. That is, the upper end of the punch holder 610 of the bending punch part 600 is provided on the guide rail 630 to be moved.

The bending punch part 600 moves horizontally toward the holder part 500 by the punch guide part 800 when the moving plate 400 descends, and then returns to the original state when the moving plate 400 rises. It is configured to be moved to the opposite side of the holder portion 500 by a return means (not shown) for returning.

Here, the return means may be composed of an elastic member that provides elasticity to pull the bending punch portion 600 to the opposite side of the holder portion 500, or may be composed of a cylinder operated by a sensor or an operation switch.

In addition, the die fixing member 340, which is fixed to the bending die 350 in the bending die 300 and slides on both sides of the cam block 330, also pressurizes the holder 500 when the movable plate 400 is lowered. When it is lowered by the moving plate 400 is raised, the die holding member 340 is configured to be raised to return to the original position. That is, the die fixing member 340 is configured to be raised when the force is elastically supported by a separate elastic member at the bottom to remove the force pressing the top, or may be configured to be lifted by a separate cylinder.

The operation of the acute angle bending mold according to an embodiment of the present invention having the configuration as described above will be briefly described.

In order to bend both ends of the plate member M at an acute angle, the moving plate 400 of the mold is raised before placing the plate member M to be banded on the bending die 350 of the acute angle bending die 100. The holder part 500 is spaced apart from the bending die part 300. Then, the plate member M is placed on the bending die 350 of the bending die portion 300.

Subsequently, when the acute angle bending mold 100 is operated, the moving plate 400 is lowered, and the holder part 500 and the bending punching part 300 fixed to the moving plate 400 are also lowered together. .

The descending holder 500 is fixed while pressing the plate member (M) mounted on the bending punch (350). The bending punch 620 of the bending punch part 600 is moved toward the holder part 500 from both sides of the holder part 500.

Here, when the bending punch part 600 is lowered, the punch holder 610 is horizontally moved toward the holder part 500 while being guided to the punch guide part 800 provided in the fixing plate 200.

When the bending punching part 600 is moved in the horizontal direction at the same time as the lowering, the holder 500 is lowered while pressing and fixing the plate member (M) mounted on the pair of bending dies 350 and At the same time, the bending die 350 is further pressed. Then, the pair of bending dies 350 are lowered along both inclined sides of the cam block 330 and moved in the horizontal direction at the same time.

Thus, the pair of banding dies 350 are opened, and the pair of banding punches 620 are lowered and narrowed so that the banding dies 350 and the banding punches 620 collide with each other. Both ends of the plate member M fixed by the bending die 350 and the holder part 500 are band-molded at an acute angle.

This will be described in detail with reference to FIGS. 5 to 7 as follows.

As the bending punch 620 is lowered, as shown in FIG. 5, the lower side of the bending punch 620 having the molding groove 710 is further lowered while pressing the end of the plate member M. As shown in FIG. Then, the bending punch 620 is lowered and moved horizontally toward the bending die 350 as shown in FIG. 6, wherein the plate member M is bent while the forming groove 710 of the bending punch 620 is folded. It is in close contact with the lower part. In addition, the bending punch 620 moves downward toward the bending die 350 and contacts the holder 500 as shown in FIG. 7. Then, the plate member M fixed by the holder part 500 and the bending die 350 is completely bent at an acute angle and is completely in close contact with the inside of the forming groove 710 of the bending punch 620.

That is, in order for both ends of the plate member M to be fully bent at an acute angle, as illustrated in FIG. 7, the bending punch 620 may hit the bending die 350. In this case, the forming groove 710 of the bending punch 620 may be used. Forming protrusions 720 of the bending die 350 is to be coupled to each other via both ends of the plate member (M).

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but this is merely exemplary, and those skilled in the art to which the art belongs may have various modifications and other equivalent embodiments therefrom. I understand that it is possible. Accordingly, the true scope of the present invention should be determined by the following claims.

100: press mold for acute bending
200: fixed plate
300: bending die portion 310: fixed protrusion
320: guide member 330: cam block
340: die fixing member 350: banding die
400: moving plate
500 holder part
600: bending punch portion 610: punch holder
620: Banding Punch
700: acute angle bending portion 710: forming groove
720: forming protrusion
800: punch guide portion

Claims

A bending die portion provided in the fixing plate and on which the plate member is placed;
A moving plate installed to be movable upward and downward from an upper side of the bending die portion;
A holder part fixed to the moving plate and configured to pressurize and fix the plate member according to the movement of the moving plate;
A pair of bending punch parts installed horizontally movable at both sides of the holder part;
An acute angle bending portion formed at a lower end of the bending punch portion and having a forming groove portion having an acute angle and a forming protrusion corresponding to the forming groove portion and protruding diagonally from both ends of the upper end of the bending die portion;
Banding molding press die, characterized in that comprising a.

The method of claim 1,
The bending die portion,
A fixing protrusion protruding from an upper portion of the fixing plate and having both sides formed at a predetermined inclination;
A pair of guide members fixed to both sides of the fixing protrusions;
A cam block fixed to an upper portion of the fixing protrusion and having both sides formed at a predetermined inclination;
A die fixing member installed in close contact with both sides of the cam block and installed to reciprocate up and down;
Banding forming press die, characterized in that it comprises a bending die fixed to the upper portion of the die fixing member.

The method of claim 1,
The bending punch portion,
A pair of punch holders installed to be moved in directions facing each other on both sides of the holder part;
Banding molding press die, characterized in that it comprises a banding punch is fixed to each of the lower end side of the pair of punch holder, fixed to face each other.

The method of claim 1,
The moving plate is provided with a guide rail for guide bending for guiding the horizontal movement of the bending punch portion.

The method of claim 1,
The fixing plate is provided with a punch guide part for guiding a bending punch part so that the pair of bending punch parts can be moved in a direction facing each other when the movable plate is lowered during operation of a mold. mold.